You asked:

was salmaan taseer older than tavleen singh

No. Salmaan Taseer is not older than Tavleen Singh. Salmaan Taseer is between 52 years and 9 months and 53 years and 8 months old (died aged between 46 years and 1 month and 47 years). Tavleen Singh is between 66 years and 9 months and 67 years and 8 months old.
Salmaan Taseer
Salmaan Taseer
Salmaan Taseer

Tavleen Singh
Tavleen Singh
Tavleen Singh