Aunkst information from a letter...

Letter from  Danny D. Aungst, of Fullerton, California, died November 18, 2007, age 70 years. 

".....as far as I know Christian Aungst changed the name by adding the "u" to it, taking the harshness out of it. The name is spelled many ways now. Angst - Aungst - Aunkst - Ongst - Anngst -- Onkst are a few of them.

The immigrant, Daniel Angst, is the son of Johann Daniel Angst, [b. July 2, 1686, d. 1740]. The immigrant's grandfather, also named Johann Daniel Angst [b.August 2, 1650, d.1710; m. January 16, 1677 to Eva Christine Kramp]. The great grandfather of the immigrant was Burkhard Angst [b. 1613, d. May 11, 1688; m.Katherine Mueller]. His great great grandfather was Simon Angst [b. about 1585; m.Margaretha, d. February 23, 1647]. There was also a son Caspar, brother of Burkhard.

In Siebmacher's Wappenbuch [Coat of Arms manual] Section VII, page 74, plate 78, appears the house-make of Simon and Casper Angst, Enkirch, Germany, 1662. In the Historish Biographisches, Lexikon, Der Schweiz, page 378, appears the Coat of Arms of the Swiss branch of the Angst family. They resided in Eglisau and Regensberg, Canton of Zurich. Branches resided in Andelfingen, Engadin, Parrish Raffz, and Niederwyl, Switzerland, before their removal to Germany and America.

While still in Germany, on July 3, 1744, Daniel Angst, the immigrant, married in Irmenach Evangelical Lutheran Church, Marie Elizabeth Stroeher [b.Horbruch, German Bapt. Evangelical Lutheran Church, Kleinach, Germany, March 23, 1725, daughter of Johann Nicholas and Eva Maria Stroeher]. He married [2], November 11, 1766, Magdalene Fisher [b.September 20, 1737, d. September 2, 1803; daughter of George Ulrich Fisher of Tulpehocken Township, Berks County, Pennsylvania. 

Along with other Rhinelanders, the Angst came to America, embarking at Rotterdam in the British sailing ship, "The Two Brothers," landing  at Philadelphia, September 15, 1748. They settled in East Hanover Township, Lancaster [now Lebanon] County, PA. A few years later they moved across the Blue Mountains to Pine Grove Township, Berks [now Schuylkill] County, PA., where they purchased 380 acre tracts of uncultivated land from Timothy Horsefield. In a few years a considerable clearing was made, and Daniel Angst Sr. and his sons established a grist and saw mill. Numerous descendants still reside in this locality. ..."