Who fathered Blake Lively?!?!

There are 5 siblings(Blake and Eric) then (Robyn, Jason and Lori). 2 husbands Ernie Lively and Ronnie Lively and 2 mothers, Peggy Lively and Elaine McAlpin Lively (Mother of Blake and Eric). There is NO information on Ronnie Lively on IMDB (shocking) and conflicting family connecting information on all remaining family members. Can anyone explain what happened here? I've added an addition outside link of info on Ronnie Lively to hopefully fill in a little information. I would also like to note that ERNIE LIVELY actually changed HIS NAME to LIVELY when he married Elaine. I don't get it either but there You have it. Here are a few links.... 

Thanks Bunches!

Blake-https://www.imdb.com/name/nm0515116/bio/?ref_=nm_ov_bio_sm 

Eric- https://www.imdb.com/name/nm0515123/faq/?ref_=nm_faq_2#date-of-birth

Lori- https://www.imdb.com/name/nm0515134/?ref_=nmfaq

Jason- https://www.imdb.com/name/nm0515128/?ref_=nmfaq

Robyn- https://www.imdb.com/name/nm0515128/?ref_=nmfaq

Elaine- https://www.imdb.com/name/nm0515122/faq/?ref_=nm_faq_2#spouse

Ernie- https://www.imdb.com/name/nm0113536/?ref_=nmbio_trv

Ronnie- https://thenewsgod.com/elaine-livelys-and-ex-husband-ronnie-lively-a-detailed-look/