Columns, for easy editing:
==========================

(if(isequal([people],aisling,8),
if(isequal([date],2005//11//20,8),Aisling's birthday,
if(isequal([date],2006//11//20,8),Aisling's 1st birthday,
if(isequal([date],2007//11//20,8),Aisling's 2nd birthday,
if(isequal([date],2008//11//20,8),Aisling's 3rd birthday,
if(isequal([date],2009//11//20,8),Aisling's 4th birthday,
if(isequal([date],2010//11//20,8),Aisling's 5th birthday,
if(isequal([date],2005//11//21,8),Aisling/, aged 1 day,
if(isequal([date],2005//11//22,8),Aisling/, aged 2 days,
if(isequal([date],2005//11//23,8),Aisling/, aged 3 days,
if(isequal([date],2005//11//24,8),Aisling/, aged 4 days,
if(isequal([date],2005//11//25,8),Aisling/, aged 5 days,
if(isequal([date],2005//11//26,8),Aisling/, aged 6 days,
if(isequal([numbers],051203,4),Aisling/, aged 1 week,
if(isequal([numbers],051210,4),Aisling/, aged 2 weeks,
if(isequal([numbers],051217,4),Aisling/, aged 3 weeks,
if(isequal([numbers],051224,4),Aisling/, aged 4 weeks,
if(isequal([numbers],051231,4),Aisling/, aged 5 weeks,
if(isequal([numbers],060107,4),Aisling/, aged 6 weeks,
if(isequal([numbers],060114,4),Aisling/, aged 7 weeks,
if(isequal([numbers],060121,4),Aisling/, aged 8 weeks,
if(isequal([numbers],060219,4),Aisling/, aged 2 months,
if(isequal([numbers],060319,4),Aisling/, aged 3 months,
if(isequal([numbers],060419,4),Aisling/, aged 4 months,
if(isequal([numbers],060519,4),Aisling/, aged 5 months,
if(isequal([numbers],060619,4),Aisling/, aged 6 months,
if(isequal([numbers],060719,4),Aisling/, aged 7 months,
if(isequal([numbers],060819,4),Aisling/, aged 8 months,
if(isequal([numbers],060919,4),Aisling/, aged 9 months,
if(isequal([numbers],061019,4),Aisling/, aged 10 months,
if(isequal([numbers],061119,4),Aisling/, aged 11 months,
if(isequal([numbers],061219,4),Aisling/, aged 1 year,
if(isequal([numbers],070119,4),Aisling/, aged 13 months,
if(isequal([numbers],070219,4),Aisling/, aged 14 months,
if(isequal([numbers],070319,4),Aisling/, aged 15 months,
if(isequal([numbers],070419,4),Aisling/, aged 16 months,
if(isequal([numbers],070519,4),Aisling/, aged 17 months,
if(isequal([numbers],070619,4),Aisling/, aged 18 months,
if(isequal([numbers],070719,4),Aisling/, aged 19 months,
if(isequal([numbers],070819,4),Aisling/, aged 20 months,
if(isequal([numbers],070919,4),Aisling/, aged 21 months,
if(isequal([numbers],071019,4),Aisling/, aged 22 months,
if(isequal([numbers],071119,4),Aisling/, aged 23 months,
if(isequal([numbers],081119,4),Aisling/, aged 2 years,
if(isequal([numbers],091119,4),Aisling/, aged 3 years,
if(isequal([numbers],101119,4),Aisling/, aged 4 years,
if(isequal([numbers],111119,4),Aisling/, aged 5 years,FIX THE CAPTION))))))))))))))))))))))))))))))))))))))))))))))/) formatdate([date,0],dd MMMM yyyy),formatdate([date,0],dd MMMM yyyy)/)



The full expression, ready to copy & paste:
===========================================

(if(isequal([people],aisling,8),if(isequal([date],2005//11//20,8),Aisling's birthday,if(isequal([date],2006//11//20,8),Aisling's 1st birthday,if(isequal([date],2007//11//20,8),Aisling's 2nd birthday,if(isequal([date],2008//11//20,8),Aisling's 3rd birthday,if(isequal([date],2009//11//20,8),Aisling's 4th birthday,if(isequal([date],2010//11//20,8),Aisling's 5th birthday,if(isequal([date],2005//11//21,8),Aisling/, aged 1 day,if(isequal([date],2005//11//22,8),Aisling/, aged 2 days,if(isequal([date],2005//11//23,8),Aisling/, aged 3 days,if(isequal([date],2005//11//24,8),Aisling/, aged 4 days,if(isequal([date],2005//11//25,8),Aisling/, aged 5 days,if(isequal([date],2005//11//26,8),Aisling/, aged 6 days,if(isequal([numbers],051203,4),Aisling/, aged 1 week,if(isequal([numbers],051210,4),Aisling/, aged 2 weeks,if(isequal([numbers],051217,4),Aisling/, aged 3 weeks,if(isequal([numbers],051224,4),Aisling/, aged 4 weeks,if(isequal([numbers],051231,4),Aisling/, aged 5 weeks,if(isequal([numbers],060107,4),Aisling/, aged 6 weeks,if(isequal([numbers],060114,4),Aisling/, aged 7 weeks,if(isequal([numbers],060121,4),Aisling/, aged 8 weeks,if(isequal([numbers],060219,4),Aisling/, aged 2 months,if(isequal([numbers],060319,4),Aisling/, aged 3 months,if(isequal([numbers],060419,4),Aisling/, aged 4 months,if(isequal([numbers],060519,4),Aisling/, aged 5 months,if(isequal([numbers],060619,4),Aisling/, aged 6 months,if(isequal([numbers],060719,4),Aisling/, aged 7 months,if(isequal([numbers],060819,4),Aisling/, aged 8 months,if(isequal([numbers],060919,4),Aisling/, aged 9 months,if(isequal([numbers],061019,4),Aisling/, aged 10 months,if(isequal([numbers],061119,4),Aisling/, aged 11 months,if(isequal([numbers],061219,4),Aisling/, aged 1 year,if(isequal([numbers],070119,4),Aisling/, aged 13 months,if(isequal([numbers],070219,4),Aisling/, aged 14 months,if(isequal([numbers],070319,4),Aisling/, aged 15 months,if(isequal([numbers],070419,4),Aisling/, aged 16 months,if(isequal([numbers],070519,4),Aisling/, aged 17 months,if(isequal([numbers],070619,4),Aisling/, aged 18 months,if(isequal([numbers],070719,4),Aisling/, aged 19 months,if(isequal([numbers],070819,4),Aisling/, aged 20 months,if(isequal([numbers],070919,4),Aisling/, aged 21 months,if(isequal([numbers],071019,4),Aisling/, aged 22 months,if(isequal([numbers],071119,4),Aisling/, aged 23 months,if(isequal([numbers],081119,4),Aisling/, aged 2 years,if(isequal([numbers],091119,4),Aisling/, aged 3 years,if(isequal([numbers],101119,4),Aisling/, aged 4 years,if(isequal([numbers],111119,4),Aisling/, aged 5 years,FIX THE CAPTION))))))))))))))))))))))))))))))))))))))))))))))/) formatdate([date,0],dd MMMM yyyy),formatdate([date,0],dd MMMM yyyy)/)