I appreciate the responses given by you all. I have my educational certificates attested, my marriage certificate is attested by Saudi embassy and Ministry of External affairs as I was residing in Saudi Arabia from 1999-2005. My Kids birth certificate is not attested but is it really required to attest them as their passports has my name. Attesting all the birth certificates will be a tedious task when I'm based in Qatar and there is only kids and wife back home.