question: Following a series of invasions beginning shortly after their conquest of England in 1066, the Normans seized much of Wales and established quasi-independent Marcher lordships, owing allegiance to the English crown. However, Welsh principalities such as Gwynedd, Powys and Deheubarth survived and from the end of the 11th century, the Welsh began pushing back the Norman advance. Over the following century the Welsh recovery fluctuated and the English kings, notably Henry II, several times sought to conquer or establish suzerainty over the native Welsh principalities. Nevertheless, by the end of the 12th century the Marcher lordships were reduced to the south and south east of the country. The principality of Gwynedd was the dominant power in Wales in the first half of the 13th century, with Powys and Deheubarth becoming tributary states. Gwynedd's princes now assumed the title "Prince of Wales". But war with England in 1241 and 1245, followed by a dynastic dispute in the succession to the throne, weakened Gwynedd and allowed Henry III to seize Perfeddwlad . However, from 1256 a resurgent Gwynedd under Llywelyn ap Gruffudd  resumed the war with Henry and took back Perfeddwlad. By the Treaty of Montgomery of 1267, peace was restored and, in return for doing homage to the English king, Llywelyn was recognised as Prince of Wales and his re-conquest of Perfeddwlad was accepted by Henry. However, sporadic warfare between Llywelyn and some of the Marcher Lords, such as Gilbert de Clare, Roger Mortimer and Humphrey de Bohun continued.
Answer this question: Which happened first, the Normans  conquest of England or their seizing Wales?
answer: conquest of England

question: There were 167,490 households of which 29.7% had children under the age of 18 living with them, 22.4% were married couples living together, 25.3% had a female householder with no husband present, 6.0% had a male householder with no wife present, and 46.4% were non-families. 39.5% of all households were made up of individuals and 10.7% had someone living alone who was 65 years of age or older. The average household size was 2.29 and the average family size was 3.11.
Answer this question: How many in percent of households weren't married couples living together?
answer: 77.6

question: The First Utrecht Civil War  took place between 1470 and 1474 when the Hook and Cod wars spilled over into the Bishopric of Utrecht. David of Burgundy, illegitimate son of Philip the Good, Duke of Burgundy had been  appointed as bishop of Utrecht in 1456 with support of the Cods. The Utrecht chapters, however, had elected the Hook-favoured provost Gijsbrecht van Brederode as bishop. But Philip the Good used force to make David's appointment be accepted. Nevertheless, opposition against his rule remained, and David of Burgundy even found it safer to leave the city of Utrecht and take up residence in Wijk bij Duurstede. The van Brederode family was at the center of the opposition. In 1470, David of Burgundy imprisoned Gijsbrecht van Brederode and his brother Reinoud II van Brederode, and had them tortured. This action stirred up the century old animosity between the Hooks who supported the family van Brederode and the Cods who supported Burgundy. A civil war broke out that lasted until 1474.The status-quo returned, until a Second Utrecht Civil War broke out in 1481.
Answer this question: How many years spanned from when the Civil war first started?
answer:
4