Philips is almost certainly certainly either a patronymic or anglicisation of another name. Names were changed often on migration.
Names from the Suwalki Lomza gubernias of NE Poland, some areas now partly in Lithuania (since WW1 Peace Setlement of 1919), can be found on JRI Poland or Litvak SIG. Suwalk is the anglicisation of Suwalki - there is no V in Polish.
Kurland was the old name for Latvia, implying a Latvian origin. Sackheim is a German name - though Suwalki Lomza was on the borders with Konigsberg in East Prussia (now Kaliningrad).
You do need to find out what the original name was. It took me many years to find out that my Abrahams/Abrams ancestors from Suwalki and Manchester UK were originally called Ceglarksi, following a lucky hit on Family Tree DNA, to a US cousin who had a paper trail linking my family to his. Abrahams was the family patronymic. Many Suwalkers went to UK, Sweden and France as well as to North America, mainly early between 1860 and 1880.
Jill Whitehead, Surrey, UK formerly on Editorial Board of Landsmen, journal of Suwalki Lomza SIG (now defunct)
All my 8 great grandparents came from the Suwalki Lomza gubernias to the UK between 1865 and 1875.
Names from Suwalki Lomza:
Ceglarski later Abrahams/Abrams from Suwalki and Manchester
Serwianski later Servian from Sejny, Lake Serwy and Liverpool
Brin later Brown from Vishtinetz/Wiestieniec/Vistystis/Wistitten (now in Lithuania) and Edinburgh
Rubenstein or Berenstein from Vishtinetz/Wiestieniec/Vistystis/Wistitten (now in Lithuania) and Edinburgh
Guttenberg later Graham from Rajgrod and Hull/Grimsby/Sheffield
Plotnowski/Plottnovsky later Jacobs from Raczki and Hull