Read this article and answer this question As of the census of 2000, 750,097 people, 286,098 households, and 197,693 families resided in the county.  The population density was 1,553 people per square mile (599/km²). The 297,434 housing units averaged 238 units/km² (616 units/sq mi).  The Race (United States Census) of the county was 86.46% White, 7.46% Black or African American, 0.11% Native American, 4.02% Asian, 0.03% Pacific Islander, 0.75% from other races, and 1.16% from two or more races.  About 2.04% of the population were Hispanic or Latino of any race, 17.5% were of German people, 16.7% Irish people, 14.3% Italian people, 6.5% English people, and 5.0% Polish people ancestry according to 2000 United States Census. Around 90.5% spoke English language, 2.0% Spanish language, 1.1% korean language, and 1.0% Italian language as their first language.  Historically, much of western Montgomery County is part of the Pennsylvania Dutch Country, with a great many descendants of German language-speaking settlers from the 18th century.
What were the two most common ancestries in Montgomery County?
German