Question: Where was the father of Philip Of Hachberg-Sausenberg born?

Rudolf II, Margrave of Hachberg-Sausenberg
Margrave Rudolf II of Hachberg- Sausenberg"( medieval: Rudolf II of Hachberg- Susenberg)"( 1301 – 1352) was the son of Margrave Rudolf I of Hachberg- Sausenberg and his wife Agnes, the heiress of Otto of Rötteln.
After their elder brother Henry died in 1318, Rudolf II and his younger brother Otto I took up government in Rötteln and Sausenberg.
They moved their seat of government from Sausenburg Castle to Rötteln Castle.
In the fall of 1332, troops from the City of Basel besieged Rötteln Castle, because one of the brothers had stabbed the mayor of Basel.
The conflict was settled after mediation by the nobility of the city and the margraviate.
Hugo, Margrave of Hachberg-Sausenberg
Margrave Hugo of Hachberg- Sausenberg( died 1444) was the youngest son of Margrave William of Hachberg- Sausenberg and his wife, Elisabeth of Montfort- Bregenz.
After his father died in 1441, he ruled jointly with his elder brother Rudolf IV.
Hugo died in 1444, after only three years as co-ruler.
He did not have an heir; after his death, Rudolf IV ruled alone.
Rudolf I, Margrave of Hachberg-Sausenberg
Margrave Rudolf I of Hachberg-Sausenberg (d.1313) was the son of Margrave Henry II of Hachberg and Anne of Üsenberg.
He married in 1298 or 1299 to Agnes, the heiress of Otto of Rötteln.
In 1306 he founded the side-line Hachberg-Sausenberg at Sausenburg Castle, a castle which the Margraves of Hachberg had built in 1240 on top of Mount Sausenberg.
His elder brother Henry III continued the main Baden-Hachberg line at Hochburg castle in Emmendingen.
In 1311 Lord Lüthold II of Rötteln made Rudolf his co-ruler at Rötteln Castle.
This established the foundation for the rise of the Hachberg-Sausenberg line.
Rudolf himself died before Lüthold.
In 1315, Lüthold donated the Lordship of Rötteln to Rudolf's son Henry, who came of age in that year.
He had three children: Henry, Rudolf II and Otto I.
Philip of Hachberg-Sausenberg
Margrave Philip of Hachberg-Sausenberg (1454 – 9 September 1503) was the son of the Margrave Rudolf IV of Hachberg-Sausenberg and Margaret of Vienne.
Philip reigned in 1487–1503 as Margrave of Hachberg-Sausenberg and Count of Neuchâtel.
From 1466 he called himself Lord of Badenweiler.
Otto I, Margrave of Hachberg-Sausenberg
Otto I, Margrave of Hachberg- Sausenberg( 1302 – 1384) was a member of the House of Zähringen.
He was the ruling Margrave of Rötteln and Sausenberg from 1318 until his death.
William, Margrave of Hachberg-Sausenberg
Margrave William of Hachberg- Sausenberg( 11 July 1406- 15 August 1482) was the son of Margrave Rudolf III of Hachberg- Sausenberg and Anne of Freiburg- Neuchâtel.
He ruled from 1428 to 1441, and abdicated on 21 June 1441 in favor of his infant sons, Rudolf IV and Hugo.
As they were still infants, his cousin Count John of Freiburg- Neuchâtel took over the government as regent.
Rudolf III, Margrave of Hachberg-Sausenberg
Margrave Rudolf III of Hachberg- Sausenberg( 1343 – 1428) was the son of Margrave Rudolf II of Hachberg- Sausenberg and Catherine of Thierstein.
He inherited Hachberg- Sausenberg when his father died in 1352.
As he was a minor at the time, his uncle Otto I acted as regent.
When Rudolf II came of age, he and Otto I ruled jointly, until Otto's death in 1384.
Rudolf III is considered the most important of the Margraves of Hachberg- Sausenberg.
Otto III of Hachberg
Otto III of Hachberg( 6 March 1388 at Rötteln Castle – 14 November 1451 in Constance) was Bishop of Constance from 1410 to 1434.
During this time he was the host of the Council of Constance( 1414- 1418).
Although he was the second person named Otto in the Hachberg- Sausenberg line of the House of Zähringen, he is consistently called Otto III in the literature, because he was the third bishop of Constance named Otto.
Otto was the eldest son of Margrave Rudolf III of Hachberg- Sausenberg and his second wife, Anne of Freiburg- Neuchâtel.
Henry, Margrave of Hachberg-Sausenberg
Henry, Margrave of Hachberg- Sausenberg( 1300- 1318) was the son of Margrave Rudolf
I of Hachberg- Sausenberg and his wife Agnes, who was the daughter and heiress of Otto of Rötteln.
In 1312, when he was still a minor, he inherited his father's possessions.
After he came of age in 1315, his uncle Lüthold II of Röttlen gave him the Lordship of Rötteln.
Lüthold II died in 1316.
Henry died young, in 1318, at the age of 18.
After his death, his younger brothers Rudolf II and Otto took up the reign of the Lordships Rötteln and Sausenberg.
Rudolf IV, Margrave of Hachberg-Sausenberg
Margrave Rudolf IV of Hachberg-Sausenberg (1426 or 1427, Rötteln Castle – 12 April 1487, Rötteln Castle) was the son the Margrave William of Hachberg-Sausenberg and his wife Elisabeth of Montfort-Bregenz.
In 1441, Rudolf's father abdicated in favor of Rudolf and his brother Hugo.
Since they were both minors at the time, their uncle Count John of Freiburg-Neuchâtel took up government as their guardian.
Hugo died in 1444.
Rudolf was a Margrave of Hachberg-Sausenberg from 1441, and a Count of Neuchâtel from 1447.

Answer: Rötteln Castle