Ivanko is a diminutive (or term of endearment) for Ivan (eevahn) which means John. Other forms are Ivo, Ive, Ivko, Janko.
Perhaps the correct spelling of his mother's name was BULE which sounds like boolay.That name is found in Dubrovnik County Croatia where Cilipi is located.
There are several BULE but none in Cilipi phone listings.Here are the KRAVIC (krahvich) listings NAMETOWNADDRESSPHONE 01.KRAVIC ANA Cilipi(+385) 98 812 434 02.KRAVIC IVAN Dubrovnik(+385) 98 9068 682 03.KRAVIC IVO Cilipi, Masjesi 10 (+385) 20 771 276 04.KRAVIC NIKO Cilipi, Masjesi 10 (+385) 20 771 275
There are also ŠIŠA (sheeshah) found in that region.
KRAVIC has one of two roots.... Krava can mean... cow or... neat.The IC ending means son of.ŠIŠA may come from the word ŠIŠATI which means to cut of to shear. Whew... good thing that sisa has diacritical marks or the name would be a very strange surname!
And... the LDS Church (Mormon) Family History Center has records as follows:Matièna knjiga, 1745-1920Rimokatolièka crkva. Župa Èilipi
The records are in Italian, Latin and Croatian.
Those records may be ordered and rented for $3.50 at a local FHC near you!They will read like a family tree.
The church at Cilipi is Saint Nicholas the Bishop, which was severly damaged in the 1991-1995 attack on Croatia by Serbia.
Robert Jerin Croatian Heritage Museum Cleveland Ohio