R. Avraham son of R. David

Krustpils / Kreutzburg

He served as Av Beit Din, Maggid Mesharim, and rabbinic decisor.

Author of the book Ginzei HaMelekh (manuscript) on the four sections of the Shulchan Aruch.1)

An approbation from him (dated 2 Nisan 5597) in the book Tosefet Shabbat (Warsaw 5646).2)

Latvia and Rabbis

1)
At the National Library in Jerusalem there is a register of approbations he collected (beginning from 5596) for his book Ginzei HaMelekh on the four sections of the Shulchan Aruch, which he intended to print. From reading the approbations it emerges that he also had a book of homilies on the Torah that he wished to print.
2)
In Zikaron BaSefer, p. 50: “In Kreutzburg there was a rabbi R. Avraham who would write the main laws of women in Yiddish in large letters and post them in the women's gallery on the wall.” But I do not know whether this is this R. Avraham or R. Avraham Lichtstein mentioned above. In the newspaper HaYom, 29 Tishrei 5648 (issue 212), it is written that there was a rabbi here by the name of R. Avraham HaLevi, and perhaps this is he.